Attitude manoeuvre and vibration control of flexible spacecraft using computed feed-forward input commands and proportional-derivative feedback

2007 ◽  
Vol 221 (5) ◽  
pp. 785-794
Author(s):  
Q Hu
Keyword(s):  
Vibration Control ◽  
Flexible Spacecraft ◽  
Feed Forward

scholarly journals Feedforward Control of Gear Mesh Vibration Using Piezoelectric Actuators

1994 ◽  
Vol 1 (5) ◽  
pp. 473-484 ◽  
Author(s):  
Gerald T. Montague ◽  
Albert F. Kascak ◽  
Alan Palazzolo ◽  
Daniel Manchala ◽  
Erwin Thomas
Keyword(s):  
Vibration Control ◽  
High Frequency ◽  
Feedforward Control ◽  
Piezoelectric Actuators ◽  
General Linear ◽  
Test Results ◽  
Vibratory System ◽  
Feed Forward ◽  
Gear Mesh ◽  
Feed Forward Controller

This article presents a novel means for suppressing gear mesh related vibrations. The key components in this approach are piezoelectric actuators and a high-frequency, analog feed forward controller. Test results are presented and show up to a 70% reduction in gear mesh acceleration and vibration control up to 4500 Hz. The principle of the approach is explained by an analysis of a harmonically excited, general linear vibratory system.

Active Vibration Control Based on Self-Sensing for Unknown Target Structures by Direct Velocity Feedback With Adaptive Feed-Forward Cancellation

2013 ◽  
Author(s):  
Shota Yabui ◽  
Itsuro Kajiwara ◽  
Ryohei Okita
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Control Method ◽  
Active Vibration Control ◽  
Mechanical Resonance ◽  
Velocity Feedback ◽  
Feed Forward ◽  
Periodic Disturbance ◽  
Active Vibration ◽  
The Voice

This paper presents active vibration control based on self-sensing for unknown target structures by direct velocity feedback (DVFB) with enhanced adaptive feed-forward cancellation (AFC). AFC is known as an adaptive control method, and the adaptive algorithm can estimate a periodic disturbance. In a previous study, an enhanced AFC was developed to compensate for a non-periodic disturbance. An active vibration control based on self-sensing by DVFB can suppress mechanical resonance by using relative velocity between the voice coil actuator and a target structure. In this study, the enhanced AFC was applied to compensate disturbance for the self-sensing vibration control system. The simulation results showed the vibration control system with DVFB and enhanced AFC could suppress mechanical resonance and compensate disturbances.

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